Initial Aurora Core 0.1 implementation

Production-grade media metadata backend per docs/aurora-core-spec.md:
Aurora-owned UUIDv7 identity system, normalized movie/TV/people/credits
schema, provider abstraction with a TMDb adapter, an idempotent async
ingestion pipeline (normalize -> match -> upsert -> provenance), a
Postgres FTS/trigram search layer, a stateless FastAPI v1 API with
Redis caching/rate-limiting, arq workers, dev/prod Docker Compose
topologies, unit + integration + load tests, CI, and architecture/
database/API/ERD documentation.

Co-Authored-By: Claude Sonnet 5 <[email protected]>

app/models/company.py

@@ -0,0 +1,62 @@
+"""Production companies, studios, networks, and distributors.
+
+Modeled as a single `Company` table distinguished by `company_type` per the
+spec (section 8), rather than a separate Network entity — a TV network and a
+studio share the same shape (name, logo, country, parent company)."""
+
+from __future__ import annotations
+
+import uuid
+
+from sqlalchemy import ForeignKey, String, Text
+from sqlalchemy.orm import Mapped, mapped_column, relationship
+
+from app.models.base import Base, TimestampMixin, UUIDPrimaryKeyMixin
+from app.models.enums import CompanyType
+
+
+class Company(Base, UUIDPrimaryKeyMixin, TimestampMixin):
+    __tablename__ = "companies"
+
+    name: Mapped[str] = mapped_column(String(300), nullable=False, index=True)
+    company_type: Mapped[CompanyType] = mapped_column(
+        default=CompanyType.PRODUCTION_COMPANY, nullable=False
+    )
+    description: Mapped[str | None] = mapped_column(Text, nullable=True)
+    country_code: Mapped[str | None] = mapped_column(
+        ForeignKey("countries.code"), nullable=True
+    )
+    headquarters: Mapped[str | None] = mapped_column(String(300), nullable=True)
+    homepage: Mapped[str | None] = mapped_column(String(500), nullable=True)
+    parent_company_id: Mapped[uuid.UUID | None] = mapped_column(
+        ForeignKey("companies.id", ondelete="SET NULL"), nullable=True
+    )
+
+    parent_company: Mapped[Company | None] = relationship(remote_side="Company.id")
+
+
+class MovieCompany(Base):
+    __tablename__ = "movie_companies"
+
+    movie_id: Mapped[uuid.UUID] = mapped_column(
+        ForeignKey("movies.id", ondelete="CASCADE"), primary_key=True
+    )
+    company_id: Mapped[uuid.UUID] = mapped_column(
+        ForeignKey("companies.id", ondelete="CASCADE"), primary_key=True
+    )
+    role: Mapped[str | None] = mapped_column(String(50), nullable=True)
+
+
+class SeriesCompany(Base):
+    __tablename__ = "series_companies"
+
+    series_id: Mapped[uuid.UUID] = mapped_column(
+        ForeignKey("series.id", ondelete="CASCADE"), primary_key=True
+    )
+    company_id: Mapped[uuid.UUID] = mapped_column(
+        ForeignKey("companies.id", ondelete="CASCADE"), primary_key=True
+    )
+    role: Mapped[str | None] = mapped_column(String(50), nullable=True)
+
+
+__all__ = ["Company", "MovieCompany", "SeriesCompany"]